Enhanced multiferroic properties of single-phase BiFeO3 bulk ceramics by Ho doping
Enhanced multiferroic properties of single-phase BiFeO3 bulk ceramics by Ho doping
复制标题
DOI：
10.1063/1.3552682
复制
发表时间：
2011-02-14
影响因子：
4
通讯作者：
Kang, Suk-Joong L.
中科院分区：
文献类型：
--
作者：
Jeon, Nari;Rout, Dibyaranjan;Kang, Suk-Joong L.
采用固相反应法制备了致密的单相BiFeO 3和Bi0.9Ho0.1FeO3陶瓷。Ho的掺杂提高了BiFeO 3的剩余极化，改善了低电场下的开关特性。Ho掺杂提高了击穿电压，同时降低了漏电流，同时减轻了在高电场下的剩余极化。这些结果可以解释关于稀土掺杂对剩余极化的影响的相互矛盾的发现。Bi_（0.9）Ho_（0.1）Fe_（0.9）O_3具有独特的双磁滞回线，其磁化强度随磁场强度的增大而增大。这些改善的性能，通过Ho掺杂证明了提高BiFeO 3的多铁性适用性的可能性。(C)2011年美国物理学会。[doi：10.1063/1.3552682]
Dense single-phase BiFeO3 and Bi0.9Ho0.1FeO3 ceramics were prepared by the solid-state reaction method. With Ho doping, the remnant polarization of BiFeO3 was enhanced and the switching characteristics improved at low electric fields. Ho doping increased the breakdown voltage with a reduction of the leakage current while mitigating the remnant polarization at high electric fields. These results can explain conflicting findings regarding the effects of rare-earth doping on remnant polarization. Bi0.9Ho0.1FeO3 exhibited peculiar double hysteresis looplike magnetization-magnetic field curves with a much enhanced remnant magnetization. These improved properties obtained by Ho doping demonstrate the possibility of enhancing the multiferroic applicability of BiFeO3. (C) 2011 American Institute of Physics. [doi:10.1063/1.3552682]